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How to start a SSH session using expect?
The second line in your script uses the spawn command, which launches an external command. In this example, since we are dealing with SSH, the ssh command is used to start a SSH session with a remote server, “ remote.server.com ”. When attempting to connect to a remote server via SSH you will be prompted for a password.
Is there a script to automate SSH sessions?
The Expect script is the entire automated two-way conversation. In an Except script, dialog from both sending and receiving computers is scripted. A common use of Expects scripts is to automate SSH sessions between a local computer and a remote server. Except is available as an installable software package for most Linux distros.
Is there a way to expect a SSH password?
Done! instead, as passwords starting with a dash (-) will fail otherwise. The above won’t interpret a string starting with a dash as an option to the send command. Use the helper tool fd0ssh (from hxtools, not pmt). It works without having to expect a particular prompt from the ssh program.
Which is the expect regular expression for SSH?
The first Yes/No choice is added to make sure that it doesn’t fail if remote server key is not already imported. The other expect regular expressions varies across the servers, for my server it ends with “#” but for some other servers it might end with “$”, so you may need to edit it accordingly.
How to expect remote ssh login and execute commands?
Expect effectively repeats its search as if it had been invoked again. You might have a look at this… it takes a list of commands, contained in a file, and executes them on the remote host by interactively logging in and executing them one-at-a-time on the remote machine.
How to write shell script to SSH to remote machine?
Install sshpass using, apt-get install sshpass then edit the script and put your linux machines IPs, usernames and password in respective order. After that run that script.
How to create a bash script to check the SSH connection?
My problem is that the remote machines are not very reliable, and they are not always up. I need a bash script that would check if the SSH connection is up. Before actually creating the keys for future use. EDIT: Another approach would be to use nmap (you won’t need to have keys or login-stuff):
What is expect script for remote ssh login?
I am using the following Expect script for remote SSH login to a Raspberry Pi and am executing the commands:
How to write expect script for remote server?
Writing Expect script is very easy (google to get help on this) Put all the action which needs to be performed on remote server in a shell script. Invoke remote shell script from expect script once login is successful. Highly active question.